You can't, or if you do mange to convince a network to allow you to do it, it's entirely at their discretion. You have no right to be able to do this. You certainly have no right to any kind of discount.

You can't, or if you do mange to convince a network to allow you to do it, it's entirely at their discretion. You have no right to be able to do this. You certainly have no right to any kind of discount.